Planooraph co



O. KYLIN.

CLUTCH.

APPLICATION FILED MAR. 27. 1918.

1,309,761 I Patented July 15, 1919.

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0. KYLIN.

CLUTCH.

APPLICATION FILED MAR. 27,1918.

1,309,76 1 Patented July 15, 1919.

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OSK.AR KYLIN, OF ELKHART, INDIANA, ASSIGNOR TO FOSTER MACHIN'E COMPANY ELKHART, INDIANA, A CORPORATION .OF INDIANA.

CLUTCH.

Specification of Letters'latent. 1 Patented 1y 1.5, 1919,

Application :filed March 27,1918. Serial No..224,9a6.

T 0 all whom it may concern:

Be it known that I, OSKAR KYLIN, a subject of the King of Sweden, .but adeclarant of intention of becoming a citizen of the proved means for actuating the clutch Iing into engagement withtheclutchdrum. .Another object of the invention is the production of a clutch of thecharacter described .in which improved means for clutch ring adjustment are incorporated, whereby weapon the ring and clutch drum may be taken up. Other objects of my invention arementioned and described herein.

The preferred embodiment of my invention is illustrated in the accompanying drawings in which Figure 1 is a "longitudinal section of the clutch and loose pulley and clutch drum to which the application .of the invention is made; Fig. 2 is .a side elevation of the clutch, pulley and drum; Fig. 3 is a side elevation of an assembly of the .clutch ring and its expanding members; Fig. 41 is a fragment showing the clutch rin ends and expanding members somewhat enlarged and in section; Fig. 5 is asection taken on the line 5-5 of Fig. .4; Fig. 6 is an end ielevation of one side of the clutch ring shown in Fig. 3; Fig. 7 is a side elevation of oneside of the clutch ring carrier or driver member; Fig. 8 is a side elevation of the opposite side of the clutch ring carrier member; Fig. .9 is a section taken on the line' 99 of Fig. 8; Fig. 10 is a .view of-the ;adjustable fulcrum pin; Fig. 11 is an end view of the fulcrum pin; F ig.'12 is a side elevation ofone of the clutch ring expanding levers; Fig. 13 is a View of the member shown in Fig. 12 taken at right angles; Fig.

, 14 is a section taken on the line 14-14 of suitable means.

:clutch ring.

similar members and parts of members throughout the several views on the .draw ings.

Referring to the drawings in detail, the numeral 1 indicates a driving shaft upon which a pulley .mem-ber 2'is loosely mounted, being confined against longitudinal movement on the shaft by a collar 3 which is rigidly fastened to v the shaft, said pulley having a clutch drum tat .one side thereof the [inner periphery whereof :is .adapted to be -.engaged by the ,expansible clutch ling hereinafter described. The numeral .5 .indicates an annular clutch ringcarrier or driver member which is bored at 6 for rigid mounting upon the shaft 1 by a .set screw 7, or may be fastened by other The .numeral .8 indicates a counter balance on the carrier 5 and .provided with .a radially extending aperture 9 formed therethrough. Numeral 10 indicates .an annular split .eX-p ansible clutch ring mounted upon the carrier member 5 and driven thereby through .a pin 11 Which is arranged in apinsocket 12 formed in the lug 13 of said ring l0,'said pin projecting into the aperture .9.of the carrier member 5. The split lutch ring 10 is normally self .contractible, being provided witha plurality of stop lugs 14, 14.- adapted to engagethe outer periphery of the driver member 5 to limit the inward contractile movement of said The ends of the clutch .ring 10 are spaced from each other to form a gap 15 within which gap .a. pair .of cooperating clutch ring expanding. fingers, or levers, hereinafter -:described, are arranged. The numerals ,16 and 17 indicate a pair 20f radially extendin brackets carried on theouter periphery o the driver member 5, said brackets being transversely and .axiallyapertured .at 18 and 19, respectively, said apertures being cylindrical in formation, the lat- .ter aperture being substantially greater in diameter than theformer and screw threaded. Numeral 20 indicatesa fulcrum pin provided with a cylindrical screw threaded end portion 21, a conical or tapered intermediate portion 22, and a relatively smaller cylindrical end portion 23, the portion 21 engaging the threaded bracket aperture 19 of said carrier 5 and the opposite end 23 of. said ,pin "being slidably arranged in the aperture 18 of the carrier bracket 16. The tapered portion 22 of the pin '20 is arranged within fingers, or levers, gripped within the clutch ring gap 15 by the contractile clutch ring 10, each of said levers having a transverse tongue 28 which is pivotally arranged within a corresponding tongue socket 29 formed in an adjacent clutch ring end, both of the fingers being otherwise spaced from the clutch ring ends to permit of some pivotal action by the fingers.

The numerals 30 and 31 indicate converging sloping faces formed transversely of and adjacent the outer ends of the fingers 26 and 27, respectively, and above the pivot 'point 28 of each finger, said sloping faces being adapted to bear upon the opposite sides of the tapered portion 22 of the fulcrum pin 20 and confined thereon by the gers 26 and 27 isforked and carries a roller 32 carried on a pin 33 mounted in the lever neath the bracket1'6, said lever beingadapted'to swing in a radlal plane, and adapted also, when'outwardly and radially actuated, to actuate or spread'the fingers 26'and 27, as hereinafter described. The lever 34 is provided with a counter balance 37 whichis centrifugally actuated when the driver 5 is j rotated, whereby the opposite end of'the -lever'34 'upon which is mounted a roller 38,

is inwardlyprojected and normally maintained, thereby. disposing the roller 38 adjacent the shaft 1. The-lever 34isprovided also with a Wedge 39 intermediate the pivot pin 35 and the roller 88 andada-pted to engage between the lever rollers 32 32 when the lever 34 is outwardly and radially actuated by a cone member 40 slidably mounted lup on theshaft 1 and adapted to be proected against said lever roller 38.

member 40 may have a shifter-lever groove .ll which maybe engaged by any suitable The cone form ofshifting lever (notshown) for sliding the cone back and forth on the shaft 1. lWhen wear occurs by vlrtue of the frictional"engagement between the clutch ring 10 and the inner periphery of the drum 1 a means for adjusting the clutch ring to take up such wear is provided, this being done by a slight expansion of the clutch ring and iseffected by a partial, or full, rotation of the fulcrum pin 20. Obviously, the rotation of; the pin 20 causes the tapered fulcrum portion 22 of the pin 20 totravel toward thebracket 16, whereby outward pressure is exerted against the sloping lever faces 30 and 31, which pressure is transmitted to the p, clutch ring ends through the tongues 28, 28, thereby slightly widening the ring gap 15 and" expanding the ring. The-numeral 42 indicates a set screw mounted in the thread ed aperture 43 of the bracket 17 and adapted to engage the pin 20 to prevent adjustment displacement thereof. r

In practice, the pulley 2 isusually con nected bybelt with amain line shaft, or motor, from which it takes power, in which event the shaft 1 carries a driving pulley (not shown) connected by belt (not shown) with the machine'to be driven, and in which case the pulley 2 runs free on the shaft 1 contractile pressure exerted by the clutch ring 10. The inner end of each of the finuntil clutch rings expansion is effected and the drum 4: engaged thereby. But, obviously,,this rule of practicemay be reversed and the pulley 2 may thereby become a driven member for power transmission through the shaft 1.

I claim: I I 1. In a clutch, a shaft; a drum revolubly mounted upon the shaft; a carrier member rigidly mounted upon said shaft; a split expansible clutch ring mounted upon f the carrier member and arranged within said drum; a plurality of clutch ring expanding levers fulcrumed in said carrier member and operatively connected with the clutchring ad acent its opposing ends; an actuating Ymember mounted in the carrier member and adapted to move radially thereof, said actuating member being adapted also 'to engage between said expanding levers when outwardly radially actuated for actuating said levers apart centrifugally actuated means carried by said actuating member for normally effecting disengagement between it and said expanding levers; and means for outwardly radially actuating said actuating member between said expanding levers, whereby clutch ring expansion is effected.

. .2111 a clutch, a shaft; adrum revolubly mounted upon the shaft; a. carrier member I rigidly mounted upon said shaft; a split expansible and normally contractile clutch rlng mounted upon said carrier member and within said drum, the clutch ring ends being spaced apart; a pair of c'oiiperatingsubstantially radially arranged clutch ring expanding levers fulcrumed in said carrier member and arranged between the clutch ring ends, said levers being gripped by said clutch ring ends and operatively connected therewith at the point where gripped; an actuating lever pivoted in the carrier member and adapted to swing radially thereof, said actuating lever being adapted also to engage between said expanding levers when outwardly radially actuated; eentrifugally actuated means carried by said actuating lever for normally efieoting disengagement between it and said expanding levers; and

means for outwardly radially actuating said 10 actuating lever between said expanding levers, whereby clutch ring expansion is effected.

In testimony whereof I have hereunto af fixed my signature this 21st day of March, 15 1918.

OSKAR KYLIN.

Copies of this patent may be obtained for five cents eaoh, by addressing the Commissioner of Patents. Washington, D. 0. 

